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authorEric Wong <normalperson@yhbt.net>2013-08-24 09:54:45 +0000
committerEric Wong <normalperson@yhbt.net>2013-08-24 09:54:45 +0000
commit3e09ac0c10c95bb24a08af62393b4f761e2743d0 (patch)
tree778dffa2ba8798503fc047db0feef6d65426ea22 /lib/dtas/writable_iter.rb
downloaddtas-3e09ac0c10c95bb24a08af62393b4f761e2743d0.tar.gz
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diff --git a/lib/dtas/writable_iter.rb b/lib/dtas/writable_iter.rb
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+# -*- encoding: binary -*-
+# :stopdoc:
+# Copyright (C) 2013, Eric Wong <normalperson@yhbt.net>
+# License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
+require_relative '../dtas'
+
+module DTAS::WritableIter
+  attr_accessor :on_writable
+
+  def writable_iter_init
+    @on_writable = nil
+  end
+
+  # this is used to exchange our own writable status for the readable
+  # status of the DTAS::Buffer which triggered us.
+  def writable_iter
+    if owr = @on_writable
+      @on_writable = nil
+      owr.call # this triggers readability watching of DTAS::Buffer
+    end
+    :ignore
+  end
+end